King Arthur Baking

See how we mastered Auth0 and unified a BigCommerce site, Drupal site, and new mobile app on a critical pre-holiday deadline.

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Image of King Arthur Baking flour bags with the King Arthur Baking logo on top
Engineering the Invisible:

A Frictionless SSO for King Arthur Baking


A Long-Time Client with a New Ambition

King Arthur Baking, a national, employee-owned company based in Vermont, is a long-time MoJo Active client. Known for their premium flour, they have grown into an all-encompassing baking brand. Deep technical collaboration defines our relationship, which includes the award-winning on-demand class system we previously built with their team.

King Arthur returned to MoJo Active with a new, complex challenge: they were launching a mobile app and needed to unify the King Arthur account experience across their entire digital ecosystem.

Screen shot of the King Arthur Baking customer sign in screen

The High-Stakes Challenge

The client’s goal was to create a Single Sign-On (SSO) solution connecting three distinct platforms: their BigCommerce shop, their Drupal brand site, and their new mobile app built by Open Forge. This would allow a customer’s activity—like saving a recipe—to be seamlessly reflected across all three platforms, whether they're in the app, on the shop site, or on the brand site.


This project presented four significant challenges:

A Critical Roadblock

Migrating all users to a new login system typically requires a forced password reset for the entire customer base. Forcing this on all users right before the holiday shopping season was not an option.

Checkout Conversion Risk

The new SSO solution, Auth0, would redirect users away from the BigCommerce site to log in. There was concern that if this happened during checkout, it would cause a massive drop in conversions.

The Tight Timeline

The project kicked off in late September and needed to launch before the critical holiday shopping season, leaving a sub-two-month window for completion.

New, Complex Technology

The client had selected Auth0 for the SSO. This was a brand-new, highly complex platform that MoJo Active, King Arthur’s internal team, and the app developer had never used before.

Primary Objectives:
  • Migrate all users to Auth0 without forcing a password reset.
  • Protect checkout conversion rates with a seamless, non-disruptive login process.
  • Successfully launch the entire system on a sub-two-month, pre-holiday timeline.
Screen shot of the King Arthur Baking customer onboarding screen.

Mastering Complexity, Architecting a Solution

King Arthur’s internal team needed to focus on their main goal: launching the mobile app. MoJo Active stepped in as the technical architect for the entire SSO implementation. We learned the complex Auth0 system from the ground up and engineered solutions for every challenge.


Key components of the solution included:

Solving the Non-Starter with Progressive Migration

We built a progressive migration solution to avoid a forced password reset. Our team wrote custom scripts that made Auth0 use BigCommerce as the credential source for a customer’s first login. Auth0 invisibly captured the credentials, created the new account, and seamlessly logged the user in. To the customer, the account migration was completely invisible.

Protecting Checkout Conversions

Our developers engineered a seamless redirect cycle. If a user signs in at checkout, the system redirects them to Auth0 and immediately returns them to the same step in the checkout process, eliminating any friction or drop-off.

Re-Architecting the Data Ecosystem

This project required a fundamental “rip and replace” of the data ecosystem. Customer data previously originated in BigCommerce and was pushed to integrations like BloomReach and loyalty systems. We re-architected this entire flow, repositioning Auth0 as the new central source of truth for all customer data.

Empowering All Teams

We wrote comprehensive documentation on how Auth0’s complex systems worked. Using the MoJo Active Docs tool, we shared this critical knowledge with King Arthur’s tech team and the Open Forge app developers, saving them time and enabling their own integrations.

Screen shot of the King Arthur Baking sign in options page.

Success Is When Nobody Notices

For a project this complex, the ultimate goal was to be invisible. We successfully launched the new SSO system on time, meeting the critical pre-holiday deadline.

Seamless Pre-Holiday Launch

The entire, complex SSO system was built and launched in under two months, arriving just in time for the holiday rush.

Avoided a Barrier to Launch

The progressive migration was a 100% success. We migrated the entire King Arthur customer base to the new system with zero forced password resets.

Protected Checkout Conversions

We successfully implemented the seamless checkout login, protecting King Arthur’s conversion funnel from day one.

Enabled the Client’s Core Project

By taking full ownership of the complex SSO architecture, we empowered the King Arthur team to focus on their primary goal: launching their new mobile app.

Engineering Momentum Through Technical Leadership

This project was more than an integration; it was an act of technical leadership. It demonstrates MoJo Active’s ability to dive into a brand-new, highly complex technology, master it on a tight deadline, and architect a solution that unifies an entire digital ecosystem. We took on the complexity so our client could focus on their growth, engineering true momentum for their new app launch.

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